Even after all of these comments in favor of your decision I bet you may have some regrets in the back of your mind.
But wipe them away. If the machine appeared as you saw it from the outside.
If the outside is bad the internals can only be worse.
Just imagine the state of the boards,assemblies,switches,hacks etc.
Machine probably needed a full restoration to get it into a really decent shape.
Hope you find a good WH20.